the complete set of G5RV Antenna Patterns

G5RV ANTENNA PATTERNS
Rev. 22 Jun 2013
80 Meters
17 Meters
3.75 MHz
18.118 MHz
40 Meters
15 Meters
7.1 MHz
21.1 MHz
30 Meters
12 Meters
10.125 MHz
24.94 MHz
20 Meters
10 Meters
14.15 MHz
28.1 MHz
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80 - 10 METERS
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G5RV ANTENNA PATTERN
Rev. 22 Jun 2013
80 METERS
80 meter band:
Current Distribution on 80 Meters
On 80 meters the G5RV functions as a slightly
short half-wave dipole. The current distribution
of the antenna and matching line is shown in
to the left. The horizontal radiation pattern is
the same as a half-wave dipole on this band.
With horizontal polarization at heights below
100 feet the antenna is practically omnidirectional and has a high takeoff angle.
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G5RV ANTENNA PATTERN
Rev. 22 Jun 2013
40 METERS
40 meter band:
Current Distribution
on 40 Meters
On 40 meters the G5RV functions as "two halfwaves
in-phase" fed with a quarter-wave impedance
matching transformer. The current distribution of the
antenna and transmission line impedance matching
section is shown to the left. The horizontal radiation
pattern is somewhat narrower than the pattern of a
half-wave dipole and is broadside to the radiator on
this band. The G5RV has a small amount of gain and
radiates at medium wave angles on 40 meters.
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G5RV ANTENNA PATTERN
Rev. 22 Jun 2013
30 METERS
30 meter band:
Current Distribution on 30 Meters
On 30 meters the G5RV functions as an
extended double zepp. The current
distribution of the antenna and matching
line is shown to the left. The horizontal
radiation pattern is similar to the pattern
of the 40 meter band (broadside) but has
four additional minor lobes. The antenna
has a gain of around 3 dB on 30 meters.
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G5RV ANTENNA PATTERN
Rev. 22 Jun 2013
20 METERS
20 meter band:
Current Distribution
on 20 Meters
This is the true design frequency of the G5RV. The
antenna is a 3/2 wave center-fed antenna and has a
multi-lobe pattern on this band. On this band it is a
good DX antenna at heights of 30-60 feet. The
radiation angle is fairly low. The feedpoint of the
antenna is approximately 100 ohms resistive, and the
ladder line functions as a 1:1 ratio transformer. See
figure to the left for a diagram of current distribution.
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G5RV ANTENNA PATTERN
Rev. 22 Jun 2013
17 METERS
17 meter band:
Current Distribution on 17 Meters
The G5RV is a pair of full-wave
antennas fed in-phase on this band.
The radiation angle of the antenna is
low with many lobes in all
directions. The current distribution
of the antenna and matching line is
shown to the left.
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G5RV ANTENNA PATTERN
Rev. 22 Jun 2013
15 METERS
15 meter band:
Current Distribution on 15 Meters
The G5RV is a pair of 1.1
wavelength long wires fed in-phase
on this band. This pattern is multilobed in the horizontal plane with a
low radiation angle. The current
distribution of the antenna and
matching line is shown to the left.
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G5RV ANTENNA PATTERN
Rev. 22 Jun 2013
12 METERS
12 meter band:
Current Distribution on 12 Meters
On 12 meters the G5RV is a pair of 1.3
wavelength longwires fed in-phase. The
feedpoint resistance is fairly low. The
radiation pattern has many lobes and a
low radiation angle. The current
distribution of the antenna and ladder
line is shown in the figure to the left.
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G5RV ANTENNA PATTERN
Rev. 22 Jun 2013
10 METERS
10 meter band:
Current Distribution on 10 Meters
The G5RV functions as two 3/2 wave
longwire antennas fed in-phase on
this band. The pattern has multiple
lobes in all directions. The current
distribution of the antenna and
matching line is shown in the figure
to the left.
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